Patents Assigned to MITSUBISHI HEAVY INDUSTRIES ENGINE & TURBOCHARGER, LTD.
  • Publication number: 20200408142
    Abstract: A variable nozzle device includes: a first plate-shaped member having a first plate portion having an annular shape and being fixed to a bearing housing; a second plate-shaped member having a second plate portion which has an annular shape and which defines a nozzle flow passage between the first plate portion and the second plate portion, the second plate portion having a surface disposed so as to face the first plate portion and another surface disposed so as to face at least partially a scroll flow passage formed inside a turbine housing; at least one nozzle support having, with respect to an axial direction of the nozzle support, an end coupled to the first plate portion and another end coupled to the second plate portion; at least one nozzle vane rotatably supported between the first plate portion and the second plate portion; and a variable nozzle mechanism configured to change a vane angle of the at least one nozzle vane.
    Type: Application
    Filed: March 16, 2017
    Publication date: December 31, 2020
    Applicants: MITSUBISHI HEAVY INDUSTRIES, LTD., MITSUBISHI HEAVY INDUSTRIES ENGINE & TURBOCHARGER, LTD.
    Inventors: Keigo SAKAMOTO, Shigeyoshi SAKUMA, Eigo KATOU, Yosuke DAMMOTO, Yoji AKIYAMA, Nariaki SEIKE, Hiroyuki ARIMIZU
  • Patent number: 10871095
    Abstract: A regeneration control device controlling a temperature increase unit of an exhaust gas treatment device including a DOC disposed in an exhaust passage of a diesel engine to regenerate the exhaust gas treatment device includes: a DOC temperature-increase-necessary-state detection part detecting a temperature increase necessary state including at least one of a blockage state, detected on the basis of comparison between a blockage parameter related to blockage of the DOC and a predetermined blockage threshold, of the DOC or a blockage risk state, detected when the diesel engine is in an operating state that is likely to cause blockage of the DOC, of the DOC; and a DOC temperature increase execution part executing a DOC temperature increase control including: a first temperature increase process to control the temperature increase unit, if the temperature increase necessary state of the DOC is detected, so as to increase the temperature of the DOC to a first temperature at which the DOC activates; and a second
    Type: Grant
    Filed: June 30, 2016
    Date of Patent: December 22, 2020
    Assignee: MITSUBISHI HEAVY INDUSTRIES ENGINE & TURBOCHARGER, LTD.
    Inventors: Kazuki Nishizawa, Tomohide Yamada, Daisuke Sato, Yasuhiro Hattori
  • Publication number: 20200386242
    Abstract: A compressor housing accommodating a compressor wheel for compressing intake air supplied to an engine has therein an outer cooling passage extending along a circumferential direction on an outer circumferential side of a scroll passage of a spiral shape through which the intake air compressed by the compressor wheel flows, and an inner cooling passage extending along the circumferential direction on an inner circumferential side of the scroll passage. The inner cooling passage is separated from the outer cooling passage by a separation wall extending along the circumferential direction.
    Type: Application
    Filed: October 12, 2017
    Publication date: December 10, 2020
    Applicant: MITSUBISHI HEAVY INDUSTRIES ENGINE & TURBOCHARGER, LTD.
    Inventors: Takashi ARAI, Kenichiro IWAKIRI, Reiko TAKASHIMA
  • Publication number: 20200378260
    Abstract: A mixed-flow turbine wheel includes: a plurality of rotor blades disposed on a circumferential surface of the hub at intervals in a circumferential direction and configured such that each of the plurality of rotor blades has a leading edge which includes, in a meridional view, an oblique edge portion where a distance between the leading edge and an axis of the rotational shaft decreases from a tip side toward a hub side, and a sensor detection surface having a flat shape and being applied with a marking which is detectable by an optical sensor device.
    Type: Application
    Filed: August 22, 2016
    Publication date: December 3, 2020
    Applicant: MITSUBISHI HEAVY INDUSTRIES ENGINE & TURBOCHARGER, LTD.
    Inventors: Koji WAKASHIMA, Makoto OZAKI, Kimio HATANO, Bumpei HASHIMOTO, Hiroshi SAITO, Takuya RIKIMARU
  • Publication number: 20200378389
    Abstract: An electric supercharger includes: a compressor impeller; a motor configured to transmit a driving force to the compressor impeller via a rotational shaft; a back-surface side casing facing a back surface of the compressor impeller via a gap and surrounding the rotational shaft; a bearing disposed between the back-surface side casing and the rotational shaft so as to support the rotational shaft rotatably; and a mechanical seal positioned between the back surface of the compressor impeller and the bearing in an axial direction of the compressor impeller and configured to seal a gap between the rotational shaft and the back-surface side casing.
    Type: Application
    Filed: March 29, 2017
    Publication date: December 3, 2020
    Applicants: MITSUBISHI HEAVY INDUSTRIES, LTD., MITSUBISHI HEAVY INDUSTRIES ENGINE & TURBOCHARGER, LTD.
    Inventors: Naomichi SHIBATA, Byeongil AN, Akihiro SUGIYAMA, Yutaka FUJITA, Tadashi KANZAKA
  • Patent number: 10851797
    Abstract: A turbocharger includes: a turbine wheel; a hub-side wall surface and a shroud-side wall surface which face each other and which together form a flow path for exhaust gas to flow into the turbine wheel; and a nozzle vane which has a shroud-side end surface facing the shroud-side wall surface and a hub-side end surface facing the hub-side wall surface and which is rotatably disposed in the flow path. The nozzle vane has a pressure surface which is, at least on a shroud side, oblique toward a downstream side of the exhaust gas with a distance in a vane height direction from the shroud-side end surface.
    Type: Grant
    Filed: December 21, 2016
    Date of Patent: December 1, 2020
    Assignee: MITSUBISHI HEAVY INDUSTRIES ENGINE & TURBOCHARGER, LTD.
    Inventors: Bipin Gupta, Toyotaka Yoshida, Yosuke Dammoto, Yoji Akiyama
  • Patent number: 10851706
    Abstract: A variable nozzle mechanism includes: a nozzle mount having an annular shape; a plurality of nozzle vanes supported rotatably at a plurality of respective locations along a circumferential direction of the nozzle mount; and a drive ring disposed rotatably with respect to the nozzle mount, the drive ring being configured to transmit a driving force to the nozzle vanes so that a vane angle of the nozzle vanes is variable and to rotate the nozzle vanes. The drive ring includes: a low-rigidity region; and a high-rigidity region including an uneven portion in a thickness direction of the drive ring, and having a greater cross-sectional secondary moment than the low-rigidity region in a cross section along a radial direction of the drive ring. The low-rigidity region and the high-rigidity region are disposed alternately in the circumferential direction.
    Type: Grant
    Filed: February 24, 2015
    Date of Patent: December 1, 2020
    Assignee: MITSUBISHI HEAVY INDUSTRIES ENGINE & TURBOCHARGER, LTD.
    Inventors: Yukihide Nagayo, Yuki Ishii, Takaki Sato, Yosuke Dammoto, Youji Akiyama
  • Publication number: 20200370471
    Abstract: Provided are an exhaust bypass device and a turbocharger. The present invention is provided with: an actuator for reciprocating a driving-rod in the axial direction; a support shaft rotatably supported in a housing; a connection link having one end portion and the other end portion, wherein the one end portion is rotatably connected by a connection member to a tip portion of a connection rod connected to the driving-rod, and the other end portion is fixed to one end portion in the axial direction of the support shaft; and a waste gate valve connected to the other end portion in the axial direction of the support shaft. The present invention is also provided with: a connection shaft provided in the connection link as the connection member; and a bearing block provided in the connection rod and serving as a bearing member that rotatably supports a plurality of different parts in an axial direction of the connection shaft.
    Type: Application
    Filed: March 30, 2017
    Publication date: November 26, 2020
    Applicant: MITSUBISHI HEAVY INDUSTRIES ENGINE & TURBOCHARGER, LTD.
    Inventors: Takeshi YOSHIMI, Tatsuya ISHIZAKI, Noriyuki HAYASHI, Motoki EBISU
  • Publication number: 20200370472
    Abstract: This exhaust gas bypass device and supercharger are provided with: an actuator (31) for moving a driving rod (41) reciprocally in the axial direction of the driving rod; a coupling rod (32) coupled to the tip section of the driving rod (41); a support shaft (34) rotatably supported on a housing; a coupling link (33), one end section of which is rotatably coupled to the tip section of the coupling rod (32) via a coupling shaft (45) and the other end section of which is fixed to the one end section of the support shaft (34); a waste gate valve (35) coupled to the other end section of the support shaft (34); and a damping member for damping displacement between the coupling rod (32) and the coupling link (33), whereby reliability is improved by ensuring desirable operative characteristics.
    Type: Application
    Filed: March 7, 2017
    Publication date: November 26, 2020
    Applicant: MITSUBISHI HEAVY INDUSTRIES ENGINE & TURBOCHARGER, LTD.
    Inventors: Yoshimi KAGIMOTO, Noriyuki HAYASHI, Shigeyoshi UMEDA
  • Publication number: 20200370470
    Abstract: Provided are an exhaust bypass device and a turbocharger. The present invention is provided with: an actuator (31) for reciprocating a driving-rod (41) in the axial direction; a support shaft (34) rotatably supported in a housing (46); a connection link (33) having one end portion and the other end portion, wherein the one end portion is rotatably connected to a tip portion of the driving-rod (41), and the other end portion is fixed to one end portion in the axial direction of the support shaft (34); a waste gate valve (36) connected to the other end portion in the axial direction of the support shaft (34); and a compressive coil spring (61) disposed between the housing (46) and the connection link (33), and having a coil diameter that varies along the axial direction.
    Type: Application
    Filed: March 30, 2017
    Publication date: November 26, 2020
    Applicant: MITSUBISHI HEAVY INDUSTRIES ENGINE & TURBOCHARGER, LTD.
    Inventors: Takeshi YOSHIMI, Tatsuya ISHIZAKI, Noriyuki HAYASHI, Yukihide NAGAYO, Eigo KATOU, Motoki EBISU, Ko YAMAGUCHI, Ryoji SHIGETA
  • Patent number: 10844869
    Abstract: A turbocharger includes a turbine wheel, a hub-side wall surface and a shroud-side wall surface which face each other and which together form a flow path for exhaust gas to flow into the turbine wheel, and a plurality of nozzle vanes each of which is rotatably disposed on one of the hub-side wall surface or the shroud-side wall surface in the flow path. A throat formed between adjacent two of the plurality of nozzle vanes has a narrower throat width at a position of a first end surface of each of the adjacent two nozzle vanes facing the other of the hub-side wall surface or the shroud-side wall surface than a throat width at a middle position between the first end surface and a second end surface on an opposite side to the first end surface of each of the adjacent two nozzle vanes.
    Type: Grant
    Filed: December 21, 2016
    Date of Patent: November 24, 2020
    Assignee: MITSUBISHI HEAVY INDUSTRIES ENGINE & TURBOCHARGER, LTD.
    Inventors: Bipin Gupta, Toyotaka Yoshida, Yosuke Dammoto, Yoji Akiyama
  • Patent number: 10844902
    Abstract: A turbocharger according to one embodiment of this invention includes: a rotation shaft; a compressor impeller; a compressor housing; a bearing housing connected to the compressor housing and configured to define a diffuser flow path between the bearing housing and the compressor housing; a thrust plate configured to support the rotation shaft in an axial direction; an insert component configured to retain the thrust plate between the insert component and a protruding wall portion in the bearing housing; a snap ring configured to be inserted in a first circumferential groove formed in an inner peripheral wall surface of the bearing housing, to thereby fix the insert component in a state in which the insert component is pressed against the thrust plate; and a diffuser component having a diffuser surface extending along a direction orthogonal to an axis of the rotation shaft between the inner peripheral wall surface of an end portion of the bearing housing on one side thereof and an outer peripheral edge of the
    Type: Grant
    Filed: February 9, 2015
    Date of Patent: November 24, 2020
    Assignee: MITSUBISHI HEAVY INDUSTRIES ENGINE & TURBOCHARGER, LTD.
    Inventors: Takashi Nambu, Hiroshi Suzuki, Takashi Shiraishi
  • Patent number: 10844778
    Abstract: An exhaust-flow-rate control valve for controlling a flow rate of exhaust gas flowing through an exhaust flow passage includes: a valve rod; a valve body having a flat plate shape and configured to rotate about the valve rod; and a valve housing having a cylindrical shape and defining a part of the exhaust flow passage inside the valve housing.
    Type: Grant
    Filed: March 30, 2015
    Date of Patent: November 24, 2020
    Assignee: MITSUBISHI HEAVY INDUSTRIES ENGINE & TURBOCHARGER, LTD.
    Inventors: Byeongil An, Hiroshi Suzuki
  • Publication number: 20200362721
    Abstract: A turbine includes: a turbine impeller; a housing disposed so as to enclose the turbine impeller and including a scroll passage positioned on an outer circumferential side of the turbine impeller; a nozzle vane disposed inside an intermediate flow passage which is positioned, in an exhaust gas flow direction, on a downstream side of the scroll passage and on an upstream side of the turbine impeller; a plate disposed on a side of the intermediate flow passage with respect to an inner circumferential wall part of the housing, defining an inner circumferential boundary of the scroll passage, so as to face the intermediate flow passage such that a gap is formed between the plate and the inner circumferential wall part in an axial direction; and at least one guide vane disposed in the gap between the inner circumferential wall part and the plate in the axial direction.
    Type: Application
    Filed: December 20, 2017
    Publication date: November 19, 2020
    Applicant: MITSUBISHI HEAVY INDUSTRIES ENGINE & TURBOCHARGER, LTD.
    Inventors: Bipin GUPTA, Toyotaka YOSHIDA
  • Publication number: 20200362755
    Abstract: A contamination removing device for removing a contamination from oil for lubricating a rolling bearing supporting a rotary shaft of a turbocharger includes a body portion including an oil channel for the oil to flow, and a contamination removing element for removing the contamination from the oil flowing through the oil channel, the contamination removing element being provided in the oil channel. The body portion is configured to be detachable from the housing so that the oil channel and an oil supply channel for the oil to flow communicate with each other, the oil supply channel being formed in a housing of the turbocharger.
    Type: Application
    Filed: August 31, 2017
    Publication date: November 19, 2020
    Applicant: MITSUBISHI HEAVY INDUSTRIES ENGINE & TURBOCHARGER, LTD.
    Inventors: Yoshinori SHIGENO, Yoshitomo NODA
  • Patent number: 10837353
    Abstract: A pipe connection structure according to an embodiment of the present invention includes: two inlet pipes through which a gas is capable of flowing; a connection pipe to which respective outlet-side end portions of the two inlet pipes are connected at a distance; and an outlet pipe connected to the connection pipe at an opposite side to a side where the two inlet pipes are connected to the connection pipe, the outlet pipe being capable of being in communication with the two inlet pipes via a space section inside the connection pipe. The two inlet pipes include a first inlet pipe disposed on a first side and a second inlet pipe disposed on a second side, in a width direction of the connection pipe, across a middle of connection positions of the two inlet pipes to the connection pipe. The outlet pipe is connected to a position offset toward the second side in the width direction of the connection pipe.
    Type: Grant
    Filed: November 9, 2015
    Date of Patent: November 17, 2020
    Assignee: MITSUBISHI HEAVY INDUSTRIES ENGINE & TURBOCHARGER, LTD.
    Inventor: Kenichiro Iwakiri
  • Patent number: 10837297
    Abstract: A centrifugal compressor includes an impeller and a casing, the casing includes a scroll part forming a scroll flow passage and a diffuser part forming a diffuser flow passage. The diffuser part includes: a first diffuser portion belonging to a first angular range in a circumferential direction of the impeller; and a second diffuser portion belonging to a second angular range downstream of the first angular range in a flow direction of the scroll flow passage, of the angular range in the circumferential direction of the impeller, the second diffuser portion having an outer radius R2 which is defined along a reference circle centered at a rotational center of the impeller. An outer radius R1 of the first diffuser portion in the first angular range is smaller than the outer radius R2 of the second diffuser portion in the second angular range.
    Type: Grant
    Filed: December 25, 2015
    Date of Patent: November 17, 2020
    Assignee: MITSUBISHI HEAVY INDUSTRIES ENGINE & TURBOCHARGER, LTD.
    Inventors: Kenichiro Iwakiri, Isao Tomita
  • Patent number: 10837373
    Abstract: A precombustion chamber gas engine including a precombustion chamber communicating with a main combustion chamber includes: a precombustion-chamber-fuel supply line through which a precombustion chamber fuel flows; a precombustion-chamber-fuel supply valve connected to the precombustion-chamber-fuel supply line and controlling supply of the precombustion chamber fuel to the precombustion chamber, the precombustion-chamber-fuel supply valve being configured to open when a precombustion chamber fuel line pressure, which is a pressure of the precombustion-chamber-fuel supply line, is larger than a precombustion chamber pressure, which is a pressure of the precombustion chamber; a precombustion-chamber-fuel-line-pressure adjustment valve disposed on the precombustion-chamber-fuel supply line and capable of adjusting the precombustion chamber fuel line pressure; an exhaust-precombustion-chamber-pressure acquisition unit capable of obtaining an exhaust precombustion chamber pressure which is a pressure related to t
    Type: Grant
    Filed: January 24, 2018
    Date of Patent: November 17, 2020
    Assignee: MITSUBISHI HEAVY INDUSTRIES ENGINE & TURBOCHARGER, LTD.
    Inventors: Daisuke Takemoto, Akihiro Yuuki, Yuuta Furukawa, Kazuo Ogura, Hiroyuki Endo
  • Publication number: 20200340428
    Abstract: The purpose of the present invention is to provide a gas engine and a ship provided with the same, the gas engine making it is possible to ensure a distance that enables fuel and an oxidizing agent to mix, and to evenly mix the oxidizing agent and the fuel even if the flow rate of gas traveling towards intake pipes varies. A gas engine (1) comprises: an intake passage (10) through which a gas flows; a plurality of intake pipes (12A, 12B) where the intake passage (10) branches apart at a branching section (14) that is downstream in the gas flow direction, the intake pipes opening to a cylinder (16) at the downstream end; and a fuel injection means (31) that injects fuel into the intake passage (10). The fuel injection means (31) is provided upstream of the branching section (14) in the gas flow direction, and injects varying quantities of fuel into the plurality of intake pipes (12A, 12B).
    Type: Application
    Filed: July 25, 2018
    Publication date: October 29, 2020
    Applicant: MITSUBISHI HEAVY INDUSTRIES ENGINE & TURBOCHARGER, LTD.
    Inventors: Shintaro SHUTO, Satoshi YAMADA, Kazuro HOTTA, Tomohiro NOGUCHI, Kenichi IIZUKA, Yuki NAKAMURA
  • Patent number: 10801368
    Abstract: A turbocharger includes: a turbine wheel; a turbine housing; a bearing housing; a shroud having a facing surface which faces a tip of a blade of the turbine wheel and being configured to surround the turbine wheel, the shroud comprising a separate member from the turbine housing and being disposed inside the turbine housing via a gap with respect to the turbine housing; a mount supported to at least one of the turbine housing or the bearing housing, at a position closer to the bearing housing than a scroll flow path in an axial direction of the turbine wheel; and at least one connection part connecting the mount and the shroud.
    Type: Grant
    Filed: March 5, 2015
    Date of Patent: October 13, 2020
    Assignee: MITSUBISHI HEAVY INDUSTRIES ENGINE & TURBOCHARGER, LTD.
    Inventors: Keigo Sakamoto, Eigo Katou, Youji Akiyama, Makoto Ozaki, Daigo Watanabe